Gearing.



W. LIBPITZ. GEARING.

APPLICATION FILED AUG. 5, 1910.

1,003,142, Patented Sept. 12,1911.

UNITED STATES PATENT OFFICE.

WILHELM LIPIPITZ, OF POSEN, GERMANY.

To all whom it may concern:

Be it known that I, WILHELM LIPPITZ, citizen of the Empire of Germany,residing at 56/57 Kronprinzenstrasse, Posen, Germany, have invented newand useful Improvements in Gearing, of which the following is aspecification.

The subject of the invention consists of a freely suspended rotaryelement which is to be used in connection with machinery in place of theusual counter-shaft for the pur pose of simplifying the application ofgearing means and for lessening the cost of in stallation andmaintenance.

The invention and its application are shown for example in theaccompanying drawing in which similar reference letters indicate likeparts in the various views.

Figure 1 is an elevation, and Fig. 2 a side view of the rotary elementwhich is shown as being formed hollow. Fig. 3 to Fig. 7 inclusive showdiagrammatically the application of the device for various ratios oftransmission. Fig. 8 is a plan view of Fig. 7, and Fig. 9 shows theapplication of the device in a combined rope and chain drive.

Referring to Figs. 1 to 8, inclusive, in which the device is shown asadapted to be used in connection with belts, f is the driving and (c)the driven shaft, (CZ) the driving and (c) the driven pulley, and and(b) the pulleys of the new rotary transmission element.

The novel feature of the rotary member lies in the fact that it iswithout shaft and bearings being entirely carried or supported by thedriving members (71 (]L2). This dispenses with the unavoidable loss ofpower resulting from friction in the case of a counter shaft drive, aswell as with the costs resulting from the installation of the shaftbearings, and the cost of maintenance thereof.

Another advantage of this invention over the fixed counter shaft drive,is that the rotary element serves at the same time as a self-actingtension pulley. It is suspended in both belts (72 and (if) and itsweight tensions the belts continuously and .equally, which obviates theusual shortening of the pulling members to obtain the required tension.

Specification of Letters Patent.

Application filed August- 5, 1910.

GEARING.

Patented Sept. 12, 1911.

Serial No. 575,709.

As the rotary element is applicable anywhere, it is possible to vary thespeed ratio in the transmission of motion without the necessity ofhaving also to alter the length of the belts (b and (72?), although thediameter of the pulleys (a) and (b) will be varied. The diameters of thelatter will have to be so determined that the sum thereof is equal tothat of the pulleys (c) and (cl). The examples shown in Figs. 3, 4:, 5,6 and 7 drawn to scale diagrammatically show various transmission ratiosbased on the combination: Belt length (it- (72, constant. All thecenters of these rotary elements lie in a straight line (M-M).

If desired a number of rotary elements such as described may beemployed, and they may be arranged in parallel or in series with oneanother.

A machine, say a ventilator may be coupled with the rotary element andcarried by the driving members without departing from the nature orscope of the invention.

What I claim and desire to secure by Let ters Patent of the UnitedStates is:

1. In mechanism of the class described, in combination, a drivingmember, a driven member, a pair of belts operatively associated withsaid driving member, a belt operatively associated with said drivenmember and a rotary element supported entirely by said belts and adaptedto transmit power from the first to the second thereof.

2. In mechanism of the class described, in combination, a drivingmember, a driven member, a rotary element interposed between saidmembers and provided with a plurality of pulleys, a pair of beltsoperatively associated with said driving member and engaging a pair ofsaid pulleys and a belt operatively associated with said driven memberand engaging another of said pulleys, said rotary element beingsupported entirely by said belts.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILHELM LIPPITZ.

Witnesses:

SAM. A. KATZ, ERNST BLEISCH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

